20319960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{541}}^1$

素因数の和:868

約数の個数: 64

約数和(自身を含む): 61267680

約数和(自身を除く): 40947720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 313, 541, 626, 939, 1082, 1252, 1565, 1623, 1878, 2164, 2504, 2705, 3130, 3246, 3756, 4328, 4695, 5410, 6260, 6492, 7512, 8115, 9390, 10820, 12520, 12984, 16230, 18780, 21640, 32460, 37560, 64920, 169333, 338666, 507999, 677332, 846665, 1015998, 1354664, 1693330, 2031996, 2539995, 3386660, 4063992, 5079990, 6773320, 10159980, 20319960]

約数ペア:

[(1, 20319960), (2, 10159980), (3, 6773320), (4, 5079990), (5, 4063992), (6, 3386660), (8, 2539995), (10, 2031996), (12, 1693330), (15, 1354664), (20, 1015998), (24, 846665), (30, 677332), (40, 507999), (60, 338666), (120, 169333), (313, 64920), (541, 37560), (626, 32460), (939, 21640), (1082, 18780), (1252, 16230), (1565, 12984), (1623, 12520), (1878, 10820), (2164, 9390), (2504, 8115), (2705, 7512), (3130, 6492), (3246, 6260), (3756, 5410), (4328, 4695)]